Check_MK Werk 3465: df: Fix displayed vertical range of graph of all filesystem checks

ID: 3465 Title: df: Fix displayed vertical range of graph of all filesystem checks Component: Checks & Agents Level: 1 Class: Bug Fix Version: 1.2.9i1 The graph definition had an explicit vertical range of <tt>(0, 0)</tt>. That effectively had set the displayed range to 0..1 Bytes/day - which led to an always empty or near useless graph. This has been fixed.